Nissan Pick-ups and Pathfinder 1989-1995

Injectors and Fuel Pipe

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REMOVAL & INSTALLATION



KA24E Engine

See Figure 1

  1. Relieve the fuel pressure from the system. Disconnect the negative battery cable.
  2.  
  3. Remove the BPT valve and the bolts securing the fuel tube.
  4.  



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Fig. Fig. 1: Fuel Injector mounting-KA24E engine

  1. Remove the bolts securing the injectors, then take out the fuel tube and injector as an assembly.
  2.  
  3. Remove the injectors from the fuel tube.
  4.  

To install:
  1. Install the injectors to the fuel tube. Always use new O-rings. Lubricate O-rings with a small amount of silicone oil.
  2.  
  3. Install the injector/fuel tube assembly. Tighten the fuel tube bolts evenly to 12-15 ft. lbs. (16-21 Nm) and install the BPT valve.
  4.  
  5. Start the engine, then check for fuel leaks around the injectors and fuel tube.
  6.  

VG30E Engine

See Figures 2 through 19

  1. Relive the fuel pressure from the system. Disconnect the negative battery cable.
  2.  
  3. Remove the 2 drain plugs (from both sides of the cylinder block) and drain the engine coolant into a suitable container.
  4.  



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Fig. Fig. 2: Fuel injector mounting on the VG30E engine-Be sure to always replace the O-rings and insulators



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Fig. Fig. 3: Intake manifold collector assembly-VG30E engine



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Fig. Fig. 4: Remove the throttle cable from the drum assembly using needlenose pliers



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Fig. Fig. 5: Remove the throttle cable mounting bracket bolts before removing the intake manifold collector



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Fig. Fig. 6: Use a socket to remove the intake manifold collector mounting bolts



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Fig. Fig. 7: Remove all necessary brackets from the intake manifold collector



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Fig. Fig. 8: Using a hex-type socket, remove the intake manifold collector mounting bolts



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Fig. Fig. 9: Once the collector is removed, the fuel injector harness connectors are accessible



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Fig. Fig. 10: Release the locktabs in order to unfasten the fuel injector electrical connection-be careful not damage the connectors



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Fig. Fig. 11: Once the locktabs are released, carefully separate the connectors



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Fig. Fig. 12: Remove the fuel lines from the fuel rail-always use new fuel injection hose retaining clamps upon assembly



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Fig. Fig. 13: View of the fuel rail installed-note the location of the pressure regulator assembly



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Fig. Fig. 14: Remove the fuel rail retaining bolts-use a hex-type socket or Allen key for this job



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Fig. Fig. 15: Remove the fuel rail assembly from the engine with the injectors installed



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Fig. Fig. 16: In order to remove the injectors, loosen and remove the cover retainers



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Fig. Fig. 17: Once the retainers are unthreaded, lift the injector cover from the fuel rail



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Fig. Fig. 18: Separate the injector from the fuel rail assembly



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Fig. Fig. 19: Always replace and lubricate the O-rings upon installation of the fuel injector

  1. Disconnect the Automatic Speed Control Device (ASCD) and accelerator control wire from the intake manifold collector.
  2.  
  3. Disconnect the following from the intake manifold collector:
    1. Auxiliary Air Control (AAC) valve
    2.  
    3. Throttle sensor and throttle valve switch
    4.  
    5. Ignition coil
    6.  
    7. EGR control solenoid
    8.  
    9. Air regulator
    10.  
    11. Exhaust gas temperature sensor (California models)
    12.  
    13. PCV hose from the right-hand rocker cover
    14.  
    15. Air duct hose
    16.  
    17. Ground wire
    18.  
    19. EGR Tube
    20.  
    21. Purge hose from the evaporative canister
    22.  

  4.  
  5. Disconnect the brake master cylinder, pressure regulator and the remaining carbon canister vacuum hoses.
  6.  
  7. Remove the intake collector.
  8.  
  9. Remove the fuel hoses from the injector fuel tube assembly.
  10.  
  11. Disengage the injector electrical connectors, then remove the injectors with the fuel tube assembly.
  12.  

To install:
  1. Replace or clean the injectors, as necessary.
  2.  
  3. Install the injectors to the fuel tube using new O-rings and insulators.
  4.  
  5. Install all parts which were disconnected from the intake manifold collector, in the reverse order of removal.
  6.  
  7. Connect the negative battery cable.
  8.  
  9. Verify that the drain plugs are installed in the cylinder block, then refill and bleed the cooling system.
  10.  
  11. Run the engine, then check for fuel leaks around injectors and fuel tube.
  12.  

 
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